Apparatus for mixing materials



March'lz, 1940- SAMU-EL ISH-SHALOM 2,193,005

APPARATUS FOR MIXING MATERIALS Filed June 23, 1959 6 Sheets-Sheet 3SAMU- EL [SH-SHALOM Big/W w ATTORNEY.

Mmh SAMU-EL !SH-SHALOM 2,193,005

APPARATUS FOR MIXING MATERIALS Filed June 25, 1939 6 Sheets-Sheet 4VIII/Ill IN VENTOR.

BY SAMU-EL ISH-SHALOM 7 MRNEY.

March 12-, 1940. SAMU-EL [SH-SHALOM ,0

APPARATUS FOR MIXING MATERIALS I v Filed June 23, 1939 6 Sheets-Sheet 5III/III]. 'IIIIII llllln INVENTOR. SAMU-EL ISH-SHALOM MORN Y.

March 12, 1940. SAMUEL s +s o 2,193,005

APPARATUS FOR MIXING MATERIALS Filed June 23, 1939 6 Sheets-Sheet 6 I Ie 1 I:

lllllllllll'llI'llllllllllllHIIIIIIIIIIIIIIIIIIH A B -G D E F CINVENTOR. SAM U- EL ISH- SHALOM Patented Mar. 12, 1940 Application June23, 1939, Serial No. 280,785

2 Claims. (01. 259-4) This invention relates to an automatic mixer andmore particularly to a continuous operation.

The present invention provides a method for mixing materials inpredetermined proportions mixer adapted for andit is primarily intendedfor the treatment of materials to be used in the manufacture ofcosmetics and in preparing pigments or other coloring matter for generaluse, and also to suit special requirements.

.It is among the objects of this invention to utilize a regulated streamof compressed s,such

as air, moving at a high speed and un er great compressional energy formixing ma rials in predetermined proportions to enable one to quicklyobtain the desired tints wherein the pigments are mixed very finely withthe dry base and are fed continuously into a mixing chamher by{regulated streams of compressed gas 10 maintained at a constant speed.

It is also an object of the invention to utilize a regulated stream ofcompressed gas, for introducing the different powdered materials intothe mixing chamber and to provide regulated mate- .5 rial-introducingstreams of compressed gas in an air-float mixer which shall constitute apart of the general material agitating or mixing means.

In order to-obtain the full range of tints of cosmetics and othermaterials, a variety of coloring is necessary. It is a further object ofthis invention to enable one to quickly obtain the desired tints in anair-float mixer which is easily convertible to suit differentrequirements.

It is a still further object to provide an improved apparatus forcarrying out the above process which will be capable of'operatingcontinuously, wherein the base or coloring material will be well mixedand to ensure against the formation of lumps, to bring about afineproduct heretofore impossible to obtain .by the use of existingequipment, by giving the base and coloring matter a perfect air-floatmixing at a high rate of output,and which shall be obtained in a deviceof simple constructiomwhich is easily and quickly assembled anddisassembled and therefore easy to maintain in sanitary conditionwherein sterilized, germ-free materials may be obtained during themixing process without additional equipment. However, the process is notso limited to the use illustratively disclosed herein but may be adoptedwhenever it is desired to accomplish the same or similar results inmixing by compressed air powdered materials which are intended to beused for other similar purlocking the same in place.

In the accompanying drawings constitutin a part hereof,- and .in whichlike reference characters indicate like parts? Fig. 1 is a frontelevational view ofan apparatus constructed in accordance with thepresent invention;

Fig. 2 is a side elevational view thereof, with the mixing chamber inlocked position;

Fig. 3 is a view similar to Fig. 2, with the cover of the mixing chambershown in open position and some of the upper parts removed forclearness;

Fig. 4 is a fragmentary, enlarged vertical.

cross-sectional view of a portion of a mixing chamber and one of thefeed h ppers thereof;

Fig. 5 is a fragmentary, enlarged vertical,

cross-sectional view of the upper portion of the' apparatus showingparticularly the driving arrangement for the material feeding means;

Fig. 6 is a horizontal cross-sectional view taken through the mixingchamber;

Fig. 7 is a fragmentary, side elevational view .of a somewhat modifiedformof device for adjusting the position of the containers for thematerial;

Fig. 8 is a vertical, cross-sectional view taken along the line 8-8 ofFig. 7; and

Fig.9 is a view similar to Fig. 6 showing particularly the arrangementof heating elements chamber 2 fitted thereon with doors 3 allowin accessto the interior thereof. A mixing chamber 4 of annular shape issecured'to the top of enclosure 2 and a cover 5 therefor is hinged at 6and is provided with means 1 for latching or formed integrally with saidcover.

A pair of feed hoppers 9 and In on opposite sides of ,chamber 4 areprovided with conduits II and I 2 respectively communicating with theopen bottoms l3 thereof and connecting with pipes l4 and I5 which enteropposite sides of chamber 4. Angular ducts It and I1 respectively causethe mixture of gas and material entering through pipes l4 and I5 to havea swirling motion within chamber 4.

A gas supply passes through valve I8 and pipe l9 and thence throughbranches 20 and in through openings 2| in the bottom of chamber 4. Anannular partition 22 within chamber 4 provides an annular passageway forgas entering in through openings 2|. Blocks 23 at opposite sides thereoftogether with ducts l6 and I1 dividethe same into independent gaschambers. Each of A gas exit pipe 8 is horizontal beams or the like 32.

such chambersds provided with an opening 214 angularly placed and assistin the flow of material and cause intimate mixing thereof. From pipe I 9branches connect to conduits I I and I2 to supply gas from a singlesource for both the transporting and mixing operations.

A central exit opening of annular shape 26 is provided by means ofcentral member 21 and a pipe 28 depending from pipe 8 enters member 21and provides a centrifugal separator causing the gas to pass upwardlythrough pipes 28 and 8.

The material deposited in member 21 falls into receptacle 29 within thehousing 2.

Projecting upwardly from the base I are standards 30 and 3| united attheir upper ends by The arrangement provides an opening 33 whereby thecover 5 may be conveniently retained in open position, as shown moreparticularly in Fig. 3.

A horizontal pipe 34 is fixed in the framework so formed having adownwardly extending elbow 35. A. pipe 36 of. larger diameter than pipe,8 and provided with a set screw 31 allows a connection between pipes 8and 34 when cover 5 is closed, as shown in Fig. 2. When the cover is tobe opened, screw 31 is loosened, pipe is telescoped over pipe 8, thusproviding sumcient space for quickly and conveniently opening the cover.

On top of the framework is a plate 38 to which a motor 39 is fixed at acentral portion thereof. It is connected. to a gear reduction system 40'and carries a friction wheel 4| at the extreme end of the motor shaft. Apair of containers 42 and 43 on opposite sides of friction wheel 4| asshown in Fig. 1, are provided with'covers 44. In the bottom of saidcontainers are screw conveyers 45 and 46 respectively for feedingmaterials therein into horizontal pipes 41 and 48 respectively andthence into verticalpipes49 and 50 respectively. Sleeves. 5| and 52,preferably of flexible nature such as rubber hose, fitted over therespective pipes 49 and 50 are provided with set screws 53. I

At the inner ends of conveyors 45 and 46 are a pair of discs 54 and 55respectively, in parallel relation and contacting with friction wheel 4|which is located between the same. Bushings 56 and 51 are provided oversaid wheels 54 and 55 for sliding movement. A pair of springs 58 and 59are fitted over the respective bushings as shown in Fig. 5 wherebywheels 54 and 55 are continually forced into frictional engagement withwheel '4l. Cover sleeves 60 and GI are usually provided for protectivepurposes.

Provision is made for changing the relative speeds of conveyors 45 and'46 whereby the relative amounts of material being fed and mixed .may bechanged at will and within wide limits.

To accommodate this, mechanism is provided whereby containers 42 and 43with their associated mechanisms may be shifted bodily relative tomember 39. There are provided a pair of arms 62 and 53 for respectivecontainers having notches 64 along the lower edge thereof. Dependingmembers 65 and 65 from the respective containers have openings 61therein of a size and shape as to closely accommodate arms] 52 and 53.Set screws 68 are provided in the bottom of members 65 and 66 andadapted to set into any desired notch 54. It will be seen that byshifting one or both of the containers the relative position of frictionwheel 4| withrespect to the discs 54 and 55 may be used to change the,rate of revolution of the conveyors.

vIn some cases it may be desirable to allow vertical movement of thecontainers and also to provide a different means for shifting .the

same laterally and this is provided for in the modification shown inFigs. '1 and 8. Secured to the beam 32 is a sleeve 69 having a bar Illslidably mounted therein with a set screw ll leading into an opening independing member 55 adapted to accommodate arm 12 which instead of beingprovided with notches, is provided with a scale 13 whereby to gauge thedesired position of the container in question. Set screw I4 allows afixing of the container in its adjusted position- Member Y tion, Ser.No. 278,513, filed June 10, 1939. The

bottom I8 of chamber 4 is provided with two annular sets of heatingcoils located below chamber 4 but secured'to plate 13. Leads 35 and I!are connected to a suitable source of power whereby any desiredregulated amount of heat for sterilization or other purposesemay besupplied.

Although I have described my invention setting forth a single completeembodiment thereof and, slight variations of the construction, it willbe apparent that many other changes may be made in the details withoutdeparting from the spirit of the invention. For instance, the openingsof the gas inlets of the mixing ch ber may be of any number as the sizeof the mixing chamber may require, but they are to be placed so thattheir angle will permit and tend to deliv the materials forward into theadjacent gas s m. The speed of the material introducing streams may bevaried by manipulation of gas inlet valves so that the flow ofcompressed gas may be increased or decreased as the different materialsmay require, and there may be provided a separate valve for other gasinlets while the pressure of the gas stream flow through the mixingchamber may be regulated from'the main valve. The gas streams may alsobe supplied from the bottom by utilizing an arrangement in the shape ofa star so that the streams of the outlet openings are directed upwardand forward. This arrangement may also be used in combination with orinstead -,of an arrangement where the inlets andopenings are providedwith means to utilize a stationary or exchangeable upper plate. Therealso may be provided a series of projections on the bottom plate of anangular shape having suitable gas inlet openings so that the gas supplymay be continuous and strong enough to move the material forward underpressure as may be required. Of course, there is no set limitation as tothe exact pressure required, as that largely depends on the size of themixing chamber, the material to be used, its granular or particle sizeand weight and also on the amount of material fed into the chamber in agiven time.

What I claim is:

1. In an apparatus for mixing powdered materials, a mixing chamber ofcylindrical formation provided with concentrically arranged, spacedinner and outer walls forming an annular space between them, the chamberhaving a pair of eed tubes ar anged diametrically opposite to oneanother and having angular-1y disposed ejection ends at their points ofentry into the mixing chamber, whereby the material ejected from one ofsaid tubes will be directed in a direction opposite to that of the otherbut substantially parallel thereto, said feed tubes leading through bothwalls and communicating with the interior of the chamber but not withthe annular space, the inner wall of the chamber being provided with aplurality of air inlets establishing communication between the annularspace and the interior of the chamber, and means for delivering airunder pressure into said annular space. Y

2. In an apparatus for mixing powdered materials, a mixing chamber ofcylindrical formation provided with concentrically arranged, spacedinner and outer. walls forming an annular space between them, thechamber having a pair of feed tubes arranged diametrically opposite toone another and having angularly disposed ejection ends at their pointsoi entry into the mixing chamber, the ejection end of each tube beingdisposed at an angle to the tube on which it is located and the twoejection ends being disposed substantially- .parallel to one anotherwhereby the material ejected from one of the tubes will be directed in adirection opposite to that of the other but substantially parallelthereto, said feed tubes leading through both walls and communicating 10with the interior of the chamber but not with the annular space, theinner wall of the chamber being provided with a plurality of air inletsestablishing communication between the annular space and the interior ofthe chamber, and means

